USC stands for the University of Southern California. It is a private research university located in Los Angeles, California. The Trojans is the nickname for USC's athletic teams. However, I am unsure about the meaning of "sch" in the clue provided.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Trojans' sch.. Explanations are generated by AI and may be inaccurate.